The short answer

11am in Sierra Leone is 12pm in Greenwich Mean Time.

Sierra Leone is 1 hour behind Greenwich Mean Time. Both sides are inside the standard 9-to-5 working day, so this is a sociable time for a call in both places.

Sierra Leone
11am
Greenwich Mean Time
12pm
Right now
12:08pmGMT · UTC+00:00 · Sat, Jun 27
1:08pmBST · UTC+01:00 · Sat, Jun 27
Read across to convert
Sierra Leone
GMT · UTC+00:00
12:08pm ☀
Greenwich Mean Time
BST · UTC+01:00
1:08pm ☀
Pinned11amSierra Leone=12pmGreenwich Mean Time
12amSat
1am
1am
2am
2am
3am
3am
4am
4am
5am
5am
6am
6am
7am
7am
8am
8am
9am
WORK
9am
WORK
10am
WORK
10am
WORK
11am
WORK
PINNED
11am
WORK
12pm
WORK
NOW
12pm
WORK
1pm
WORK
1pm
WORK
2pm
WORK
2pm
WORK
3pm
WORK
3pm
WORK
4pm
WORK
4pm
WORK
5pm
5pm
6pm
6pm
7pm
7pm
8pm
8pm
9pm
9pm
10pm
10pm
11pm
11pm
12amSun ·+1d
daylightnightworking hoursoverlap
Best time to meet
Best for a call
Sierra Leone
9am–4pm
=
Greenwich Mean Time
10am–5pm
Popular conversions

Quick reference.

9amSierra Leone=10amGreenwich Mean Time
12pmSierra Leone=1pmGreenwich Mean Time
3pmSierra Leone=4pmGreenwich Mean Time
5pmSierra Leone=6pmGreenwich Mean Time
9pmSierra Leone=10pmGreenwich Mean Time
In context

What each side covers.

Sierra Leone
GMT · UTC+00:00
12:08pm
Cities on this clock
Greenwich Mean Time
BST · UTC+01:00
1:08pm
Cities on this clock

Frequently asked

Quick answers about converting between Sierra Leone and Greenwich Mean Time. Can't find what you need? Email [email protected].

What is the time difference between Sierra Leone and Greenwich Mean Time?
Sierra Leone is 1 hour behind Greenwich Mean Time right now. We always show the live, daylight-saving-correct difference, so this figure already accounts for whichever side is observing summer time today.
When it's 11am in Sierra Leone, what time is it in Greenwich Mean Time?
11am in Sierra Leone is 12pm in Greenwich Mean Time. Both sides are inside the standard 9-to-5 working day, so this is a sociable time for a call in both places. Use the hour-by-hour table above to read any other time across.
What's the best time for a call between Sierra Leone and Greenwich Mean Time?
9am–4pm in Sierra Leone lines up with 10am–5pm in Greenwich Mean Time — both sides are inside a 9-to-5 working day.
Does this account for daylight saving time?
Yes. We track every clock change in both places, so the abbreviations you see — GMT and BST — are the ones actually in effect right now, not a fixed all-year value. When either side changes its clocks, this page updates automatically.
Why is the date sometimes different on each side?
When two places are far enough apart, the same moment can fall on different calendar days. That is why some conversions are marked "previous day" or "next day" — it is the same instant in time, read off two clocks that crossed midnight at different points.